Malicious PDF — malware analysis report

Static analysis result for SHA-256 4da12d665f440494…

MALICIOUS

PDF

86.5 KB Created: 2021-01-08 22:55:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 410b7b925b08095f777d2b2ec9d611f0 SHA-1: be1f2ff1fff1441346f3e726a1f316b7d20c6a36 SHA-256: 4da12d665f4404947c6b6a56f89f68dc438af11a5d023cd487af64dcfe4aa55b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. ClamAV detection and ML classification strongly indicate malicious intent. The presence of an external URI and the overall file structure suggest an attempt to exploit users by luring them to a malicious site, possibly under the guise of providing educational resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffking.ru/123?utm_term=evan+moor+daily+reading+comprehension+kindergarten+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419654/normal_5fb5b26422625.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469359/normal_5feb42daae882.pdfIn PDF document text
    • https://cdn.sqhk.co/kaxovugefulo/gejaSpk/gopro_parkour_fails.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d3060bc-9fa4-4e54-b1a0-5fe24e8d49d8/free_revocable_living_trust_amendment_forms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a12ff891-6cfa-496f-9f63-e1068dc7afc2/jefawazebuzazare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0552f98c-4991-4b2f-ba0d-58f92c215805/67083512678.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/copy_and_paste_spaces.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/17478862973.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be319876-9af0-48b8-b315-7bd09515ee77/16034081980.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01508cee-8d01-40f7-bb35-9601ab39ce71/99102405614.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/47663212289.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/all_amman_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/consort_guidelines_systematic_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43f135cc-89a5-40f7-afce-e59e9392bda6/order_of_operations_puzzle_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/329bf54d-8048-49b5-be67-41a657c404d8/taboluxovunuw.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCEB 5752 bytes
SHA-256: c7f5e05b0514f8ed4e0ff5da311ebae303c7bde09ea64e4a2557307776b16763
font_01_sfnt_off00011068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11068 11040 bytes
SHA-256: ee5bc8e46856e4100debfd962462756b9bf4cba3488201b7db038cd40be56eb9
font_02_sfnt_off00013625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13625 16432 bytes
SHA-256: ee66136062c9e167b6b02970be45e74bccef9be96ca9cc9e1e794c004273edc8

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